Model-Based Open-Loop Ripple Compensation for High Voltage LCC Resonant Converters With Fast Response

High-voltage power supplies (HVPSs) are widely used in medical, industrial, and scientific equipment, where output ripple performance and dynamic response are critical to overall system functionality. However, due to the limitations of passive components and feedback control, achieving both low ripple performance and fast dynamic response remains challenging. This article proposes a model-based open-loop ripple compensation scheme forLCC resonantconverters with fast response, which is applied tonmultiphase interleavedLCCresonant converters via a compensation network composed of a reversely series-connectedLCCconverter. The compensation network enables active ripple cancellation of the output voltage. Through precise circuit modeling, the control strategy of the compensation network required under varying output conditions is precalculated offline, thus eliminating feedback control constraints on response speed. A 10 kV, 40 mA prototype is constructed to validate the proposed compensation scheme. Experimental results confirm that the compensation scheme proposed significantly improves ripple performance without compromising dynamic response capability.